Freezing-mixture



UNITED STATES PATENT rEicE.

FERDINAND A. SCHWILL,OF CINCINNATI, OHIO.

FREEZiNG-IVIIXTURE.

SPECIFICATION forming part of Letters Patent No. 343,860, dated June 15, 1886 Application filed March 22, 1886. Serial No. 196,172. (No specimens.)

To all whom it may concern:

Be it known that LFERDINAND A. SoHWILL, a citizen of the United States, residing at Cincinnati, in the county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Freezing-Mixtures, of which the following is a specification.

The object of my invention is to provide a freezing or refrigerating mixture that can be used for producing and maintaining a low temperature for any length of time and for any purpose whatever. This mixture is composed of the following ingredients, and in about the proportions stated, to wit: fifteen pounds of nitrate ofammonia and forty pounds of chloride of magnesium. Said ingredients are mixed with a brine composed of ice and common salt in any suitable proportions. I

FERDINAND A. SCHWVILL.

Witnesses:

J AMEs H. LAYMAN, SAML. S. CARPENTER. 

